1318956937 has 2 divisors, whose sum is σ = 1318956938. Its totient is φ = 1318956936.

The previous prime is 1318956929. The next prime is 1318956967. The reversal of 1318956937 is 7396598131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043031616 + 275925321 = 32296^2 + 16611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318956937 - 2³ = 1318956929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318956967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659478468 + 659478469.

It is an arithmetic number, because the mean of its divisors is an integer number (659478469).

Almost surely, 2^1318956937 is an apocalyptic number.

It is an amenable number.

1318956937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318956937 is an equidigital number, since it uses as much as digits as its factorization.

1318956937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 52.

The square root of 1318956937 is about 36317.4467301874. The cubic root of 1318956937 is about 1096.6722950144.

The spelling of 1318956937 in words is "one billion, three hundred eighteen million, nine hundred fifty-six thousand, nine hundred thirty-seven".